Blasting-fuse.



ma. 694,27. 'Patented Febfz, |902.'

N. HARRIS .1. BRAY.

(Application flied Nov. 29, 1901.5 (No Model.)

Nrrin ST1-iras Fries.

'armer sjLASTiNGmFUSE.

SPECIFXCATION forming part 0f Letters Patent No. 654,271, dated February 25, 1902.

Application iiled November 29, 1901. Serial No. $4,042. (No model.)

To all whom it may concern:

Be it known that we, NICHOLAS HARRIS and AJOSEPH BRAY, 4citizens of theHUnited States,

member of the fuse with a number of an-' clllary members for lighting the same, said yancillary members being preferably of tapering form for the purpose of enabling them to be readily folded against or bent around the body of'the main longitudinal member and being also spaced apart at definite-intervals.

The invention consists in the novel construction and combination of the several parts, as will be hereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification,

' in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is an elevation showing the fuse ready for blasting and with the ancillary members folded; and Fig. 2 is an elevation, partly in section, showing the ancillary members as unfolded. l

The fuse is provided with a central combustible core l, provided with a jacket 2 in the usual manner.- lFrom the central core l there are a number of ancillary branching combustible members 3,provided with jackets i and terminatingl in points 5, which points are used in igniting the fuse. The cap 6, provided with the detonating mixture 7, is of the nsnalform. The object of the ancillary mem-` bers is to enable the fuse to be readilyl ignited without danger to the operative. By having these ancillary members spaced asunder at regular intervals any desired length of fuse can be placed between the ignition-point and the detonating cap. For instance, the ancillary'members may be placed at intervals of six, twelve, or eighteen inches, as desired.

The fuse is preferably manufactured as a continuous cord which canA be wrapped upon spools or in balls, the ancillary members bcing wound spirally around the cord, as shown in Fig. l, so as to bc out of the way as much as possible. ln this form the f use is placed in the drill-hole ready for blasting, the cap being first applied in the usual manner. After the fuse is in .position any one or more of the aneillarymembers maybe unfolded, asshown in Fig. 2. The presence of the ancillary members folded against the body of the longitu dinal member is not at all objectionable and does not impair the efficiency of the fuse in any manner or offer any inconvenience whatall parts of the fuse are practically integral and the miner has no two or more parts to assemble.` He simply carries his spool or ball or piece ot fuse, as the case may be, as he would any other similar article. l-Ie has nothing to tie, nothing to splice, nothing to join together, and deals altogether with a very simple device, consisting practically of butone member. l

Having thus described our invention, we claim as new'and desire to secure by Letters` Patentl. A fuse, comprising a longitudinal com` bustible member, and a series of igniters extending laterally f'rom the longitudinal member, and spaced at intervals thereon. v

2. A fuse, comprising a 'continuous combustible member, and a series of ancillary combustible members for igniting said con-- tinuous member, said ancillary members ex-A tending laterally from vthe continuous member and being foldable relatively thereto.

One great advantage of our device is that A fuse, comprising a continuous cbmbustible member,-.and a series of ancillary' combustible members extending laterally from said continuous member, each ancillary member being provided at its free end with an ign'itible tip. p

et. A fuse, comprising a continuous combustible member, and a series of laterally-extending ancillary members, the said-ancillary members being spaced along the length of the continuous member and ignitible independently of each other.

5. A fuse, comprising a main combustible member, and a series of laterallyextending 10c ancillary members for igniting said combustible member, vthe said ancillary members boing foldabie around the main member,

(. As an article of man ufacturc, a 4cordlike combustible member adapted to be cui In testimony whereof we haive signed our Io `into arbitrary lengths and .provided with annames to this specification inthe presence oi' vlike member without breaking,4 said ancil- Witnessesi A cillary combustible members forignitingthe two subscribing Witnesses.

same the said ancillary members being of tapering form for the purpose of enabling the ABSRFIRRIS' same to be readily folded against said cordlary members being disposed' at definite in- CHRISTOPHER YTREZIRE, tervgils on said cord-like member.V RICHARD MURLEY.l 

